Progress and Perspective of Metal–Organic Frameworks as Solid Electrolyte Interphase Instability Mitigator in Magnesium Batteries

Understanding the stability and role of the solid electrolyte interphase (SEI) remains a challenge in lithium‐ion batteries (LIBs). Factors such as electrolyte composition, temperature, charge‐discharge rate, and state‐of‐charge strongly impact SEI stability and thickness. Magnesium batteries have gained attention due to their abundance, lower cost, better safety, and higher volumetric energy density than LIBs. However, their development is hindered by surface passivation of the Mg anode and sluggish ion transport due to an insulating SEI. Solid‐state electrolytes (SSEs) offer improved stability, safety, and energy density over liquid electrolytes. While the search for suitable SSE materials continues, recent advances‐especially in metal‐organic framework‐based materials‐show promise for enhancing magnesium battery performance. These advancements could expand their applications, from portable electronics to transportation. This study reviews the literature on magnesium batteries as an energy storage strategy. It highlights the importance of a bottom‐up layer‐by‐layer approach and interface optimization to address challenges like low ionic conductivity and poor interfacial stability. Overcoming these barriers is essential for realizing the full potential of magnesium batteries.